diff --git a/Lib/distutils/msvc9compiler.py b/Lib/distutils/msvc9compiler.py
index 6d7825df86e..488524db910 100644
--- a/Lib/distutils/msvc9compiler.py
+++ b/Lib/distutils/msvc9compiler.py
@@ -267,21 +267,24 @@ def query_vcvarsall(version, arch="x86"):
         stdout, stderr = popen.communicate()
         if popen.wait() != 0:
             raise DistutilsPlatformError(stderr.decode("mbcs"))
-    finally:
-        popen.close()
 
-    stdout = stdout.decode("mbcs")
-    for line in stdout.split("\n"):
-        line = Reg.convert_mbcs(line)
-        if '=' not in line:
-            continue
-        line = line.strip()
-        key, value = line.split('=', 1)
-        key = key.lower()
-        if key in interesting:
-            if value.endswith(os.pathsep):
-                value = value[:-1]
-            result[key] = removeDuplicates(value)
+        stdout = stdout.decode("mbcs")
+        for line in stdout.split("\n"):
+            line = Reg.convert_mbcs(line)
+            if '=' not in line:
+                continue
+            line = line.strip()
+            key, value = line.split('=', 1)
+            key = key.lower()
+            if key in interesting:
+                if value.endswith(os.pathsep):
+                    value = value[:-1]
+                result[key] = removeDuplicates(value)
+
+    finally:
+        popen.stdin.close()
+        popen.stdout.close()
+        popen.stderr.close()
 
     if len(result) != len(interesting):
         raise ValueError(str(list(result.keys())))